Discharging closure for mixing machines



sept, 17, 1929.-A

a 2 j 7. L. @Je M s E l I ,w 6 l m.. una ...la nu .Ov Hrm .C Ea m1 i .SF ma. 1 un d L Gm. no i H C s I D Patented Sept. 17, 1929 UNITED STATES PATENT OFFICE DISCHARGING CLOSUBE FOR MIXINGMACHINES Original application led July 8, 1926, Serial No. 121,181, and in Germany November 13, 1924.4 Divided and this applicationled February 8, 1928. Serial No. 252,867.

This invention relates toY a discharging connected to the end of the other arm m of closure on mixers, stirring machines, mortar mills, slowly rotating cylinders and the like for masses oi any kind, especially for ceramic masses, in which in the bottom of the mixing drum an aperture is arranged for which a closing piece moved like a slide and adapted to be raised and lowered is mounted. Stirring devices which move directly over the platei0 like bottom push the material towards the aperture in the bottom through which it drops into a truck placed underneath.`

The closing cover together with a mechanism for adjusting in vertical directions might further be arranged in at casing suspended on 'a pivot pin underneath the mixing drum so that it can be oscillated in horizontal direction. The oscillatable arm has means and arrangements which permit of rapidly moving the closing coveivupwardand downward by one single manipulation and to bring the whole by a lateral pressure out of the area of the discharging aperture.

A form of construction of the machine is shown, by way of example, in the accompanyin g drawing, in which:

Fig. 1 is avertical longitudinal through the device with oscillatable arm.

Fig. 2 shows in plan view seen from below the device shown in Fig. 1.

The mechanism comprising an oscillatable arm, as shown in Figs. 1 and 2 is constructed as follows :#-The rotatable mixing drum a has at the center of its bottom plate b a discharging aperture all. In Fig. 1 the closing cover d is shown in the extreme lower position,

section from which it canbe oscillated in lateral direction.

The closing coverd is mounted, by means of a stud e, in a bearing sleeve f which is arranged in a casing g. The casing g is oscillatably mounted on an axle which is 'connected by a connecting element c' to a U-iron 7c fixed underneath the mixing machine. The

is effected through the intermediary of an el-4 bow lever pivotally mounted in the casing g,-

the ball-shaped end of the upper arm Z of said elbow lever engaging with a cavity of the lowering and raising of the closing .cover dl said elbow lever.v This'connecting rod n is mounted in a tube o which is fixed in a casino' in which the elbow-lever is enclosed. The other end of the connecting rod n merges into a screw spindle internally threaI ed sleeve 1. This sleeve 7' is rotatably mounted on the flange o1 of tube o and it has a crank handle a. From this screw spindle p extends arod p, on the end of which two nuts t are screwed which servesas a `stop for the crank handle, the other stop for which is screwed into anv is either shifted to the left or right. The arm.

Z of the elbow lever is thus made to raise orV lowerthe sleeve f with the closing cover d l chines, stirring machines, mortar mills or the like for masses of any kind, consisting of a closing cover underneath the discharging aperture in the bottom plate of the machine, a laterally oscillatable structure on which said closing cover is mounted, a pivot pin on which said structure is mounted, and a crank handle on one end of said structure by which to operate said cover.

2. A discharging closure for mixing machines, stirring machines, mortar millsk or the like for masses of any kind, consisting of,

a closing cover underneath the discharging aperture in the bottom plate of the machine,

` a guide stud fixed onthe lower surface of said closing cover, a sleeve in which said guide stud is located, an oscillata'ble casing in which said sleeve is mounted, and meansv for raising and lowering said closing cover, said `means consisting of an elbow lever pivotally mounted in said casing one arm of said elbow lever engaging with said sleeve, a connecting rod hingedly connected to the other arm of said elbow lever, a screw spindleA forming part of said connecting rod, an internally threaded sleeve on said screw spindle, and a crank handle for rotating said sleeve.

3. A discharge closure for bottom discharge mixing machines, consisting of a closing cover underneath the discharge aperture in the bottom of the machine, a vertically oscillatable stud on which said cover is mounted, a sleeve in which said stud is mounted to rotate, laterally oscillatable means in which said sleeve is mounted for vertical movement,

'a connecting rod, means operated by reciprocation of said rod to raise and lower said sleeve,'and a manually operated deviceV mounted on the laterally oscillatable means to reciprocate said rod to raise and lower said sleeve to open and close the cover While permitting its rotation.

In testimony that We claim the foregoing as our invention, we have signed our names hereto.

LUDWIG EIRICH. JOSEPH EIRICH. 

